Mitsubishi Electronics MAM-GM20 Modem User Manual


 
2 Function overview
2.1 Integrated PLC protocols
Mitsubishi Alarm Modems can communicate directly with the PLCs of leading manufacturers
using the relevant PLC protocol,and access PLC variables, markers and ports viathe PLC pro
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gramming interface. This can be achieved without having to adapt the PLC program or load a
special function block for communication.
These protocols are supported:
b
Mitsubishi Alpha XL
b
Mitsubishi MELSEC FX1S/FX1N and FX2N/FX2NC
b
Mitsubishi System Q (in preperation)
2.2 Alarming with acknowledgment
Mitsubishi Alarm Modemsare fully automatic andcan send status andfault mes
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sages to any recipient via SMS, fax, e-mail or Express E-Mail.Messages can be
triggered by PLC variables.
Address book: The SMS, fax and e-mail addresses (max. 100) are
managed in an address book.
Messages: The messagetexts (max.100) cancontain upto100 actual
values from the PLC and can be of any required length
when used with faxes and e-mails.
Alarms: Up to100alarms andactions such asswitching commands
can be defined.
Alarm cascade
andacknowledgments: Any numberof freelydefinable alarmlevels canbe setupif
message acknowledgmentis required.If amessage isnot
acknowledged within a specified time, one or several
recipients can be notified. This can be cascaded
as required.
2.3 Remote switching via SMS and Express-E-Mail
A short command via SMS or Express E-Mail can switch the optional outputs of
the Mitsubishi Alarm Modem and those of a connected PLC. PLC variables can
also be set in this way.
The execution of the command can also be acknowledged. 100 SMS switch
commands with up to 10 parameters each can be defined as required. PLC
variables can be queried simply and quickly by SMS command without the need for a PC.
Integrated PLC protocols Function overview
2-1 MITSUBISHI ELECTRIC